高等学校化学学报

高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (1): 13.

• 论文 • 上一篇    下一篇

(Nd1-xYx)3Fe27.31Ti1.69化合物的结构与磁性研究

王文全1,2, 张惜锋1, 苏峰1, 王向群1, 杜晓波1, 金汉民1, 杨伏明2, 吴光恒2   

  1. 1. 吉林大学物理学院, 长春 130023;
    2. 中国科学院物理研究所磁学国家重点实验室, 北京 100080
  • 收稿日期:2001-10-25 出版日期:2003-01-24 发布日期:2003-01-24
  • 通讯作者: 王文全(1968年出生),男,博士,从事稀土过渡金属化合物的结构和磁性研究.
  • 基金资助:

    国家自然科学基金(批准号:58971061);吉林大学青年教师基金资助

Structural and Magnetic Properties of (Nd1-xYx)3Fe27.31Ti1.69 Compounds

WANG Wen-Quan1,2, ZHANG Xi-Feng1, SU Feng1, WANG Xiang-Qun1, DU Xiao-Bo1, JIN Han-Min1, YANG Fu-Ming2, WU Guang-Heng2   

  1. 1. College of Physics, Jilin University, Changchun 130023, China;
    2. State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, 100080 Beijing, China
  • Received:2001-10-25 Online:2003-01-24 Published:2003-01-24

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摘要： 制备了(Nd1-xYx)3Fe27.31Ti1.69(0≤x≤0.6)系列化合物,通过X射线衍射和磁性测量等手段研究了它们的结构和磁性.这些化合物均为Nd3(Fe,Ti)29型结构,A2/m空间群.化合物晶胞体积随Y含量增加而单调减少,居里温度Tc随Y含量增加略有降低,说明化合物的居里温度主要由Fe-Fe之间的交换相互作用所决定.温度为5K时,饱和磁化强度Ms随Y含量的增加而单调降低,与一个简单的稀释模型预期结果一致.所得化合物在低温下均发生自旋重取向,自旋重取向温度Tsr随Y含量增加而单调降低,从x=0时的232K减小到x=0.6时的121K.基于磁晶各向异性的研究结果确定了所得化合物的自旋相图.

关键词: 化合物, 居里温度, 磁晶各向异性

Abstract: The structure and magnetic properties of Nd1-xYx)3Fe27.31Ti1.69(0≤x≤0.6) compounds have been investigated by means of X-ray diffraction and magnetic measurements. It was found that all the compounds investigated crystallize in Nd3(Fe,Ti) 29-type structure with space group A2/m. With increasing Y content x, the lattice constants and the unit-cell volume decrease monotonically and the Curie temperature Tc reduces slightly. The saturation magnetization M s decreases monotonically with increasing x, which is in good agreement with that expected by a simple dilution model. All the compounds show a spin reorientation at low temperatures and the spin reorientation temperature Tsr decreases with increasing x from232 K(for x=0) to 121 K(for x=0 6). Based on investigation of magnetocrystalline anisotropy, a tentative spin phase diagram has been constructed for the (Nd1-xYx) 3Fe 27.31Ti 1.69(0≤x≤0 6) compounds.

Key words: Compounds, Curie temperature, Magnetocrystalline anisotropy

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